<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>星空</title>
    <link
            href="https://fonts.googleapis.com/css?family=Lato:300,400,700"
            rel="stylesheet"
            type="text/css"
    />
    <link rel="stylesheet" href="./index.css"/>
</head>
<body>
    <div class="layer1"></div>
    <div class="layer2"></div>
    <div class="layer3"></div>
    <div class="title">Sass 星空</div>
</body>
</html>